#include <linux/netfilter.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter_ipv6/ip6_tables.h>
+#include <net/netfilter/nf_log.h>
MODULE_AUTHOR("Jan Rekorajski <baggins@pld.org.pl>");
MODULE_DESCRIPTION("IP6 tables LOG target module");
#include <net/route.h>
#include <linux/netfilter_ipv6/ip6t_LOG.h>
-#if 0
-#define DEBUGP printk
-#else
-#define DEBUGP(format, args...)
-#endif
-
/* Use lock to serialize, so printks don't overlap */
static DEFINE_SPINLOCK(log_lock);
{
u_int8_t currenthdr;
int fragment;
- struct ipv6hdr _ip6h, *ih;
+ struct ipv6hdr _ip6h;
+ const struct ipv6hdr *ih;
unsigned int ptr;
unsigned int hdrlen = 0;
unsigned int logflags;
ptr = ip6hoff + sizeof(struct ipv6hdr);
currenthdr = ih->nexthdr;
while (currenthdr != NEXTHDR_NONE && ip6t_ext_hdr(currenthdr)) {
- struct ipv6_opt_hdr _hdr, *hp;
+ struct ipv6_opt_hdr _hdr;
+ const struct ipv6_opt_hdr *hp;
hp = skb_header_pointer(skb, ptr, sizeof(_hdr), &_hdr);
if (hp == NULL) {
switch (currenthdr) {
case IPPROTO_FRAGMENT: {
- struct frag_hdr _fhdr, *fh;
+ struct frag_hdr _fhdr;
+ const struct frag_hdr *fh;
printk("FRAG:");
fh = skb_header_pointer(skb, ptr, sizeof(_fhdr),
/* Max Length */
case IPPROTO_AH:
if (logflags & IP6T_LOG_IPOPT) {
- struct ip_auth_hdr _ahdr, *ah;
+ struct ip_auth_hdr _ahdr;
+ const struct ip_auth_hdr *ah;
/* Max length: 3 "AH " */
printk("AH ");
break;
case IPPROTO_ESP:
if (logflags & IP6T_LOG_IPOPT) {
- struct ip_esp_hdr _esph, *eh;
+ struct ip_esp_hdr _esph;
+ const struct ip_esp_hdr *eh;
/* Max length: 4 "ESP " */
printk("ESP ");
switch (currenthdr) {
case IPPROTO_TCP: {
- struct tcphdr _tcph, *th;
+ struct tcphdr _tcph;
+ const struct tcphdr *th;
/* Max length: 10 "PROTO=TCP " */
printk("PROTO=TCP ");
if ((logflags & IP6T_LOG_TCPOPT)
&& th->doff * 4 > sizeof(struct tcphdr)) {
- u_int8_t _opt[60 - sizeof(struct tcphdr)], *op;
+ u_int8_t _opt[60 - sizeof(struct tcphdr)];
+ const u_int8_t *op;
unsigned int i;
unsigned int optsize = th->doff * 4
- sizeof(struct tcphdr);
}
case IPPROTO_UDP:
case IPPROTO_UDPLITE: {
- struct udphdr _udph, *uh;
+ struct udphdr _udph;
+ const struct udphdr *uh;
if (currenthdr == IPPROTO_UDP)
/* Max length: 10 "PROTO=UDP " */
break;
}
case IPPROTO_ICMPV6: {
- struct icmp6hdr _icmp6h, *ic;
+ struct icmp6hdr _icmp6h;
+ const struct icmp6hdr *ic;
/* Max length: 13 "PROTO=ICMPv6 " */
printk("PROTO=ICMPv6 ");
if ((logflags & IP6T_LOG_UID) && recurse && skb->sk) {
read_lock_bh(&skb->sk->sk_callback_lock);
if (skb->sk->sk_socket && skb->sk->sk_socket->file)
- printk("UID=%u ", skb->sk->sk_socket->file->f_uid);
+ printk("UID=%u GID=%u",
+ skb->sk->sk_socket->file->f_uid,
+ skb->sk->sk_socket->file->f_gid);
read_unlock_bh(&skb->sk->sk_callback_lock);
}
}
}
static unsigned int
-ip6t_log_target(struct sk_buff **pskb,
- const struct net_device *in,
- const struct net_device *out,
- unsigned int hooknum,
- const struct xt_target *target,
- const void *targinfo)
+log_tg6(struct sk_buff *skb, const struct net_device *in,
+ const struct net_device *out, unsigned int hooknum,
+ const struct xt_target *target, const void *targinfo)
{
const struct ip6t_log_info *loginfo = targinfo;
struct nf_loginfo li;
li.u.log.level = loginfo->level;
li.u.log.logflags = loginfo->logflags;
- ip6t_log_packet(PF_INET6, hooknum, *pskb, in, out, &li,
- loginfo->prefix);
+ ip6t_log_packet(PF_INET6, hooknum, skb, in, out, &li, loginfo->prefix);
return XT_CONTINUE;
}
-static int ip6t_log_checkentry(const char *tablename,
- const void *entry,
- const struct xt_target *target,
- void *targinfo,
- unsigned int hook_mask)
+static bool
+log_tg6_check(const char *tablename, const void *entry,
+ const struct xt_target *target, void *targinfo,
+ unsigned int hook_mask)
{
const struct ip6t_log_info *loginfo = targinfo;
if (loginfo->level >= 8) {
- DEBUGP("LOG: level %u >= 8\n", loginfo->level);
- return 0;
+ pr_debug("LOG: level %u >= 8\n", loginfo->level);
+ return false;
}
if (loginfo->prefix[sizeof(loginfo->prefix)-1] != '\0') {
- DEBUGP("LOG: prefix term %i\n",
- loginfo->prefix[sizeof(loginfo->prefix)-1]);
- return 0;
+ pr_debug("LOG: prefix term %i\n",
+ loginfo->prefix[sizeof(loginfo->prefix)-1]);
+ return false;
}
- return 1;
+ return true;
}
-static struct xt_target ip6t_log_reg = {
+static struct xt_target log_tg6_reg __read_mostly = {
.name = "LOG",
.family = AF_INET6,
- .target = ip6t_log_target,
+ .target = log_tg6,
.targetsize = sizeof(struct ip6t_log_info),
- .checkentry = ip6t_log_checkentry,
+ .checkentry = log_tg6_check,
.me = THIS_MODULE,
};
-static struct nf_logger ip6t_logger = {
+static const struct nf_logger ip6t_logger = {
.name = "ip6t_LOG",
.logfn = &ip6t_log_packet,
.me = THIS_MODULE,
};
-static int __init ip6t_log_init(void)
+static int __init log_tg6_init(void)
{
int ret;
- ret = xt_register_target(&ip6t_log_reg);
+ ret = xt_register_target(&log_tg6_reg);
if (ret < 0)
return ret;
- ret = nf_log_register(PF_INET6, &ip6t_logger);
- if (ret < 0 && ret != -EEXIST)
- xt_unregister_target(&ip6t_log_reg);
- return ret;
+ nf_log_register(PF_INET6, &ip6t_logger);
+ return 0;
}
-static void __exit ip6t_log_fini(void)
+static void __exit log_tg6_exit(void)
{
nf_log_unregister(&ip6t_logger);
- xt_unregister_target(&ip6t_log_reg);
+ xt_unregister_target(&log_tg6_reg);
}
-module_init(ip6t_log_init);
-module_exit(ip6t_log_fini);
+module_init(log_tg6_init);
+module_exit(log_tg6_exit);
projects / mv-sheeva.git / blobdiff